On Friday in class we took the first 20 minutes to go over the lab and Mrs Friedman answered these questions:

Post-Lab Questions:

2. (d) Decomposition: CaCO3 to CO2 + CaO

    (e) Single Replacement: Fe + Pb(NO3)2 to Pb + Fe(NO3)2

Classifying Chemical Reaction Worksheet:

2. Mixing ammonium nitrate and sodium hydroxide solutions gives aqueous sodium nitrate, ammonia gas, and water. 

Answer: NH4NO3 + NaOH to NaNO3 + NH3 + H2O

6. Sulfur dioxide gas reacts with oxygen on a platinum catalyst surface to produce sulfur trioxide gas.

Answer: 2SO2 + O2 to 2SO3

8. Heating solid nickel chloride dihydrate yields solid nickel chloride and water vapor.

Answer: NiCl2 * 2H2O to NiCl2 + 2H2O

9. Heating solid potassium chlorate in the presence of manganese dioxide catalyst produces potassium chloride and oxygen gas. 

Answer: KClO3 to KCl + O2

For the rest of the class we took a quiz on what we have learned in the new unit. 

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